| 45钢拉杆断裂失效分析 |
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| 引用本文： | 胡晓辉. 45钢拉杆断裂失效分析[J]. 理化检验(物理分册), 2006, 42(12): 628-630 |
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| 作者姓名： | 胡晓辉 |
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| 作者单位： | 中国空空导弹研究院,洛阳,471009 |
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| 摘 要： | 45钢拉杆在使用过程中发生断裂。采用化学成分分析、显微组织检验、硬度测试及断口的宏、微观形貌观察等方法对断裂件进行了分析。结果表明，在正常的交变载荷作用下，拉杆因材料强度级别偏低而导致其早期疲劳断裂；另外机加工不当造成的应力集中加速了拉杆的断裂。
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| 关 键 词： | 拉杆 断裂分析 应力集中 疲劳断裂 |
| 文章编号： | 1001-4012（2006）12-0628-03 |
| 收稿时间： | 2006-04-11 |
| 修稿时间： | 2006-04-11 |
FRACTURE ANALYSIS OF 45 STEEL DRAWING POLE |
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| HU Xiao-hui. FRACTURE ANALYSIS OF 45 STEEL DRAWING POLE[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2006, 42(12): 628-630 |
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| Authors: | HU Xiao-hui |
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| Affiliation: | China Airborne Missile Academy, Luoyang 471009, China |
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| Abstract: | 45 steel draw pole failed during application. A study was conducted for the fracture analysis by means of chemical analysis, metallographic examination, hardness testing and SEM. The results showed that the failure of draw pole was fatigue fracture. The draw pole with low grade of mechanical strength occured early fatigue fracture at action of alternation stress. In addition, the stress concentration caused by improper machining was also the reason of fracture. |
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| Keywords: | Draw pole Fracture analysis Stress concentration Fatigue fracture |
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